Instead, the water moves via gravity.
相反,水自动通过重力移动上来。
When that light travels to a new environment, say to a telescope on Earth, where there is comparatively lower gravity, and time moves more slowly, the light's frequency will decrease.
当光运行而到达一个新的环境时,譬如到达了地球上的某个望远镜,由于地球上只有较小的引力,时间的流逝就会变慢,由此光的频率就会降低。
As it moves outward, it's slowed down by the gravity of matter all around it.
在暗物质向外扩张的过程中,其扩张速度由于周围物质的引力而减缓。
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